/Engine/Plugins/Developer/PluginUtils/Source/PluginUtils/Public/PluginUtils.h
Dirty assets that need to be saved will be unloaded anyway
Whether the plugin was successfully unloaded
static bool UnloadPlugin ( const [FString](API\Runtime\Core\Containers\FString) & PluginName, [FText](API\Runtime\Core\Internationalization\FText) * OutFailReason )